GET /example/.. HTTP/1.1
Host:example.amazonaws.com
X-Amz-Date:20150830T123600Z
X-Amz-Region-Set:us-east-1
Authorization:AWS4-ECDSA-P256-SHA256 Credential=AKIDEXAMPLE/20150830/service/aws4_request, SignedHeaders=host;x-amz-date;x-amz-region-set, Signature=304402206ccd591952cdb4a0a002217788234c80eac520f890b0a6ea07b98044f08ba10e0220733126caf0347f7df89773f79b9fae2648ca786e67a7d88ec296d66452da4bec